Shells like jewels: when we think of fabulous shells with vibrant colours and elaborated patterns, our mind automatically conjures up pictures of marine mollusks… oblivious to the tremendous beauty of certain land species.

Amphidromus is among them. A genus of arboreal land snails from south-western Asia, Amphidromus is notable for its large, polymorphic shells, which have fascinated naturalists and collectors since the 18th century.

Randomly dimorphic coiling? While most gastropod species show a predominance of either right- or left-handed coiling, in a significant number of Amphidromus species, individuals of the same population can be either dextral or sinistral.

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Greetings from Switzerland!

I created this weblog to share with others my interest in gastropods - or "snails and slugs", if you prefer. Here on the web I go by the nick of Schnäggli, which is - unsurprisingly, I guess - Schwiizertüütsch (Swiss German) for a snail.
This blog is a both a resource for others who may find in it useful information and a personal journal in which I record my experience, discoveries and encounters with all sorts of gastropods.All text and photos are copyrighted by me unless otherwise stated.